21056480

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1303}}^1$

素因数の和:1419

約数の個数: 48

約数和(自身を含む): 50277024

約数和(自身を除く): 29220544

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1303, 1616, 2020, 2606, 3232, 4040, 5212, 6515, 8080, 10424, 13030, 16160, 20848, 26060, 41696, 52120, 104240, 131603, 208480, 263206, 526412, 658015, 1052824, 1316030, 2105648, 2632060, 4211296, 5264120, 10528240, 21056480]

約数ペア:

[(1, 21056480), (2, 10528240), (4, 5264120), (5, 4211296), (8, 2632060), (10, 2105648), (16, 1316030), (20, 1052824), (32, 658015), (40, 526412), (80, 263206), (101, 208480), (160, 131603), (202, 104240), (404, 52120), (505, 41696), (808, 26060), (1010, 20848), (1303, 16160), (1616, 13030), (2020, 10424), (2606, 8080), (3232, 6515), (4040, 5212)]